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AISI 305 Stainless Steel vs. ACI-ASTM CA15M Steel

Both AISI 305 stainless steel and ACI-ASTM CA15M steel are iron alloys. They have 83% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 305 stainless steel and the bottom bar is ACI-ASTM CA15M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 220
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34 to 45
20
Fatigue Strength, MPa 210 to 280
330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 580 to 710
690
Tensile Strength: Yield (Proof), MPa 230 to 350
510

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 540
760
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
27
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 16
7.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
2.1
Embodied Energy, MJ/kg 45
29
Embodied Water, L/kg 150
100

Common Calculations

PREN (Pitting Resistance) 18
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 210
130
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 320
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20 to 25
25
Strength to Weight: Bending, points 20 to 23
22
Thermal Diffusivity, mm2/s 4.2
7.2
Thermal Shock Resistance, points 13 to 15
25

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.15
Chromium (Cr), % 17 to 19
11.5 to 14
Iron (Fe), % 65.1 to 72.5
82.1 to 88.4
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
0.15 to 1.0
Nickel (Ni), % 10.5 to 13
0 to 1.0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 0.65
Sulfur (S), % 0 to 0.030
0 to 0.040